sing-box/transport/fakeip/server.go

91 lines
2 KiB
Go
Raw Normal View History

2023-03-25 04:03:23 +00:00
package fakeip
import (
"context"
"net/netip"
"os"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-dns"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
N "github.com/sagernet/sing/common/network"
mDNS "github.com/miekg/dns"
)
2023-06-10 08:26:40 +00:00
var (
_ dns.Transport = (*Transport)(nil)
_ adapter.FakeIPTransport = (*Transport)(nil)
)
2023-03-25 04:03:23 +00:00
func init() {
dns.RegisterTransport([]string{"fakeip"}, NewTransport)
}
2023-06-10 08:26:40 +00:00
type Transport struct {
2023-03-25 04:03:23 +00:00
name string
router adapter.Router
store adapter.FakeIPStore
logger logger.ContextLogger
}
func NewTransport(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
router := adapter.RouterFromContext(ctx)
if router == nil {
return nil, E.New("missing router in context")
}
2023-06-10 08:26:40 +00:00
return &Transport{
2023-03-25 04:03:23 +00:00
name: name,
router: router,
logger: logger,
}, nil
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Name() string {
2023-03-25 04:03:23 +00:00
return s.name
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Start() error {
2023-03-25 04:03:23 +00:00
s.store = s.router.FakeIPStore()
if s.store == nil {
return E.New("fakeip not enabled")
}
return nil
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Close() error {
2023-03-25 04:03:23 +00:00
return nil
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Raw() bool {
2023-03-25 04:03:23 +00:00
return false
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
2023-03-25 04:03:23 +00:00
return nil, os.ErrInvalid
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Lookup(ctx context.Context, domain string, strategy dns.DomainStrategy) ([]netip.Addr, error) {
2023-03-25 04:03:23 +00:00
var addresses []netip.Addr
if strategy != dns.DomainStrategyUseIPv6 {
inet4Address, err := s.store.Create(domain, dns.DomainStrategyUseIPv4)
if err != nil {
return nil, err
}
addresses = append(addresses, inet4Address)
}
if strategy != dns.DomainStrategyUseIPv4 {
inet6Address, err := s.store.Create(domain, dns.DomainStrategyUseIPv6)
if err != nil {
return nil, err
}
addresses = append(addresses, inet6Address)
}
return addresses, nil
}
2023-06-10 08:26:40 +00:00
func (s *Transport) Store() adapter.FakeIPStore {
return s.store
}